Birhane Dibaba took home a pair of third place finishes in Chicago in 2014 and 2015, and she arrives this fall with something only 27 women have accomplished in history: a sub-2:20 personal record.

Name: Birhane Dibaba

Country of origin: Ethiopia

Standout races: Dibaba joined the exclusive sub-2:20 club after winning the Tokyo Marathon this winter in 2:19:51. She primarily races the marathon distance, and she has finished in the top five of 13 of the 14 marathons she has run.

More about Birhane Dibaba: She ran the Chicago Marathon twice before and finished third both times, with finishes of 2:27:02 in 2014 and 2:24:24 in 2015.